Effect of Semi-sitting Position on Mask Ventilation

NCT03996161 — Not applicable, Completed, 38 participants, SMG-SNU Boramae Medical Center

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Effect of Semi-sitting Position on Mask Ventilation in Anesthetized and Paralyzed Patients

Registry	NCT03996161
Status	Completed
Phase	Not applicable
Study type	Interventional; randomized, crossover, masking: single, other
Enrollment	38 (Actual)
Sponsor	SMG-SNU Boramae Medical Center (Other)
Conditions	Ventilation
Interventions	patient position (Other)
Dates	start 2020-03-09, primary completion 2020-06-08, completion 2020-06-08, first posted 2019-06-24, last updated 2020-06-11
Locations	1 site in South Korea

-Summary

We compare the effect on semi-sitting position on mask ventilation in anesthetized and paralyzed obese patients

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+Arms and interventions

Arm	Type	Interventions	Description
Supine position	Active comparator	Other: patient position	After the induction of anesthesia, mask ventilation is performed in the supine position.
Semi-sitting position	Experimental	Other: patient position	After the induction of anesthesia, mask ventilation is performed in the semi-sitting position.

patient position (Other): After the induction of anesthesia, mask ventilation is performed in the supine and semi-sitting position in a cross-over, randomized order.

+Outcome measures

Primary outcomes

Expiratory tidal volume [1 minute after the induction of anesthesia]: Expiratory tidal volume is assessed during mask ventilation in the supine and semi-sitting positions.

Secondary outcomes

Minute ventilation during mask ventilation in the supine and semi-sitting positions [1 minute after anesthesia induction]: Minute ventilation is assessed during mask ventilation
The incidence of inadequate mask ventilation or dead space ventilation. [during mask ventilation]: The incidence of inadequate mask ventilation or dead space ventilation is recorded.
Peak inspiratory pressure [during mask ventilation]: Peak inspiratory pressure is recorded.

+Eligibility

Sex: All, ages: 20 Years to any

Inclusion Criteria:

* Obese patients undergoing general anesthesia

Exclusion Criteria:

* diseases or structural abnormalities in the upper airway
* those who were at risk of aspiration
* cardiovascular or respiratory diseases
* pregnancy

+Locations (1)

Facility	City	Country	Status
SMG-SNU Boramae Medical Center	Seoul	South Korea

+Publications

Results publication: Chang JE, Seol T, Hwang JY. Body position and the effectiveness of mask ventilation in anaesthetised paralysed obese patients: A randomised cross-over study. Eur J Anaesthesiol. 2021 Aug 1;38(8):825-830. doi: 10.1097/EJA.0000000000001473. PMID 33600105